Chevrolet 1500: 02 Sensor Codes With NEW Sensors Installed?
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Date: 2021-10-16
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Comments and reviews: 9
Craig
Good job! I must admit though the new O2 sensor was bad from the beginning! Some of
these supplier's online such as on Amazon could end up steering a buyer wrong, since
an overwhelming amount of parts are being manufacturing is being made in China!
Furthermore, even though Denso is a Japanese brand name, the part could also very
well be made in; you guessed it. China! The Denso brand is for the most part is very
reliable! Chrysler/Dodge uses a lot of Denso electrical products as well. Denso is the
OEM highly sought after just like Bosch! So for DIYer's. make sure that you match the
direct replacement supplier's part number and DO NOT except an alternate part No.
UNLESS you can properly cross-reference your original part as per the recommed-
ation of the manufacturer itself or the car dealer that services your brand of vehicle!
reply
Good job! I must admit though the new O2 sensor was bad from the beginning! Some of
these supplier's online such as on Amazon could end up steering a buyer wrong, since
an overwhelming amount of parts are being manufacturing is being made in China!
Furthermore, even though Denso is a Japanese brand name, the part could also very
well be made in; you guessed it. China! The Denso brand is for the most part is very
reliable! Chrysler/Dodge uses a lot of Denso electrical products as well. Denso is the
OEM highly sought after just like Bosch! So for DIYer's. make sure that you match the
direct replacement supplier's part number and DO NOT except an alternate part No.
UNLESS you can properly cross-reference your original part as per the recommed-
ation of the manufacturer itself or the car dealer that services your brand of vehicle!
reply
Darrell
Kind of wish this video was out a few hours ago, I only just finished working on a car where the TCM was complaining of an accelerator fault the reading would suddenly lock to a specific number (about 20%) which turned out to be the ECM going into a limp mode of sorts because of a faulty fuel rail sensor connector. I have to admit, I spent too long looking at accelerator related stuff because that's the number that stopped responding. Either way, problem fixed. Thanks for all your videos, I have learnt more into the trade than you can imagine when it comes to electrical fault finding mindsets due to your explanations and showing the thought processes.
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Kind of wish this video was out a few hours ago, I only just finished working on a car where the TCM was complaining of an accelerator fault the reading would suddenly lock to a specific number (about 20%) which turned out to be the ECM going into a limp mode of sorts because of a faulty fuel rail sensor connector. I have to admit, I spent too long looking at accelerator related stuff because that's the number that stopped responding. Either way, problem fixed. Thanks for all your videos, I have learnt more into the trade than you can imagine when it comes to electrical fault finding mindsets due to your explanations and showing the thought processes.
reply
Mondragon
Had the same kind of problem with a tire pressure sensor on my old impala. The original went bad, so a new one was installed. Same issue, no reading. Shop thought it was something much more in depth than just the sensor, so they spent hours testing whatever they tested to try and find the problem. Couldn't find anything, so they just sent me on my way and said there wasn't anything they could do. Went to another shop, guy there replaced the brand new sensor with another new sensor, and it worked like normal. Like you said, new doesn't mean good!
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Had the same kind of problem with a tire pressure sensor on my old impala. The original went bad, so a new one was installed. Same issue, no reading. Shop thought it was something much more in depth than just the sensor, so they spent hours testing whatever they tested to try and find the problem. Couldn't find anything, so they just sent me on my way and said there wasn't anything they could do. Went to another shop, guy there replaced the brand new sensor with another new sensor, and it worked like normal. Like you said, new doesn't mean good!
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autos
If I had a dollar for all the defective parts I have had to thoroughly rediagnose I would be wealthy The worst part is NO one pays for the second, or the third diag The customer sure shouldn't have to and the parts suppliers won't. In some cases, once I am 95% sure I will recommend replacing part x as it is cheaper than paying me to finish a complete diag. Those are the ones that really hurt even if I warn the customer about the risks vs savings they never want to pay for the diag you now must do to prove the defective part.
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If I had a dollar for all the defective parts I have had to thoroughly rediagnose I would be wealthy The worst part is NO one pays for the second, or the third diag The customer sure shouldn't have to and the parts suppliers won't. In some cases, once I am 95% sure I will recommend replacing part x as it is cheaper than paying me to finish a complete diag. Those are the ones that really hurt even if I warn the customer about the risks vs savings they never want to pay for the diag you now must do to prove the defective part.
reply
Flowtester21
I have a 2013 Chevy truck with a 6. 0. With koeo the scan tool reads on all 4 O2 s 1. 890mv. Even unplugged they all read 1. 890mv. I verified with my DVOM that it was reading 1. 890mv. I could pull it lean with the test light and drive it high. Once I would start the truck they would read a little high but normal looking oscillations. Had anyone else seen this. I forgot to mention all 4 O2 s had been replaced with aftermarket cheap O2 s.
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I have a 2013 Chevy truck with a 6. 0. With koeo the scan tool reads on all 4 O2 s 1. 890mv. Even unplugged they all read 1. 890mv. I verified with my DVOM that it was reading 1. 890mv. I could pull it lean with the test light and drive it high. Once I would start the truck they would read a little high but normal looking oscillations. Had anyone else seen this. I forgot to mention all 4 O2 s had been replaced with aftermarket cheap O2 s.
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WECB640
I would backprobe the sense wire on the O2 and use a very high impedance probe (O-scope or FET meter) to isolate the possibility that the PCM was in self preservation mode. Go right to the horses mouth and not rely solely on the data stream. Trust, but verify.
Mrs. O did a fine job on the camera. Very still, level and no troubles. I'd like to see more of this in future along with the banter between you two.
Keep up the good work!
reply
I would backprobe the sense wire on the O2 and use a very high impedance probe (O-scope or FET meter) to isolate the possibility that the PCM was in self preservation mode. Go right to the horses mouth and not rely solely on the data stream. Trust, but verify.
Mrs. O did a fine job on the camera. Very still, level and no troubles. I'd like to see more of this in future along with the banter between you two.
Keep up the good work!
reply
D. A.
Eric is exactly right. as yesterday at the shop I'm putting in a new fuel pump and fuel filter for a 2007 ford 500. started great for about a minute then the engine lost power and stalled out with check engine light. 3 codes showed. all referring to the fuel pump and fuel level sensor being the culprit. long story short. after all the tests replaced the fuel pump and runs perfectly now!
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Eric is exactly right. as yesterday at the shop I'm putting in a new fuel pump and fuel filter for a 2007 ford 500. started great for about a minute then the engine lost power and stalled out with check engine light. 3 codes showed. all referring to the fuel pump and fuel level sensor being the culprit. long story short. after all the tests replaced the fuel pump and runs perfectly now!
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Qusin111
Kind of old looking for new sensors but let me get my popcorn and watch the rest, oops bank 1 look new but now I have a full bowl of popcorn. hardest part is convincing someone that their new part doesn't work, I have had a few of the Denso sensors not function properly but I think they have changed their slogan to: Denso, we're not as bad as Dorman but we're trying. :)
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Kind of old looking for new sensors but let me get my popcorn and watch the rest, oops bank 1 look new but now I have a full bowl of popcorn. hardest part is convincing someone that their new part doesn't work, I have had a few of the Denso sensors not function properly but I think they have changed their slogan to: Denso, we're not as bad as Dorman but we're trying. :)
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Cullen
Thanks for this video. I would have to say that is the most complete O2 sensor test video I have seen. Specially showing how to use your small test light to drive the sensor high and low. Also pumping the brake pedal versus unplugging a vacuum line is genius too.
reply
Thanks for this video. I would have to say that is the most complete O2 sensor test video I have seen. Specially showing how to use your small test light to drive the sensor high and low. Also pumping the brake pedal versus unplugging a vacuum line is genius too.
reply
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